As Newt Gingrich and Mitt Romney criss-cross Florida trying to secure enough support to win Tuesday's presidential primary, they're focusing a lot of energy on winning the Cuban vote. But the previously monolithically Republican bloc is fraying and sending support in multiple directions.

As Newt Gingrich and Mitt Romney criss-cross Florida trying to secure enough support to win Tuesday's presidential primary, they're focusing a lot of energy on winning the Cuban vote. But the previously monolithically Republican bloc is fraying and sending support in multiple directions.